From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
In the case where recursing(mm) is true variable r2 is not
inintialized and an uninitialized value is being used in the
call combine_errors later on. Fix this by setting r2 to zero.
Addresses-Coverity: ("Uninitialized scalar variable")
Fixes: def6a7a9a7f0 ("dm space maps: improve performance with inc/dec on ranges of blocks")
Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
---
drivers/md/persistent-data/dm-space-map-metadata.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/md/persistent-data/dm-space-map-metadata.c b/drivers/md/persistent-data/dm-space-map-metadata.c
index 3b70ee861cf5..5be5ef4c831f 100644
--- a/drivers/md/persistent-data/dm-space-map-metadata.c
+++ b/drivers/md/persistent-data/dm-space-map-metadata.c
@@ -432,9 +432,10 @@ static int sm_metadata_dec_blocks(struct dm_space_map *sm, dm_block_t b, dm_bloc
int32_t nr_allocations;
struct sm_metadata *smm = container_of(sm, struct sm_metadata, sm);
- if (recursing(smm))
+ if (recursing(smm)) {
r = add_bop(smm, BOP_DEC, b, e);
- else {
+ r2 = 0;
+ } else {
in(smm);
r = sm_ll_dec(&smm->ll, b, e, &nr_allocations);
r2 = out(smm);
--
2.31.1
--
dm-devel mailing list
dm-devel@xxxxxxxxxx
https://listman.redhat.com/mailman/listinfo/dm-devel
